drm/nouveau: make use of the GPUVM's shared dma-resv

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DRM GEM objects private to a single GPUVM can use a shared dma-resv.
Make use of the shared dma-resv of GPUVM rather than a driver specific
one.

The shared dma-resv originates from a "root" GEM object serving as
container for the dma-resv to make it compatible with drm_exec.

In order to make sure the object proving the shared dma-resv can't be
freed up before the objects making use of it, let every such GEM object
take a reference on it.

Reviewed-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Danilo Krummrich <dakr@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231108001259.15123-7-dakr@redhat.com

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This commit is contained in:

Danilo Krummrich 2023-11-08 01:12:36 +01:00

parent bbe8458037

commit 6118411428

5 changed files with 24 additions and 10 deletions

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11

drivers/gpu/drm/nouveau/nouveau_bo.c

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5

drivers/gpu/drm/nouveau/nouveau_bo.h

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10

drivers/gpu/drm/nouveau/nouveau_gem.c

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7

drivers/gpu/drm/nouveau/nouveau_uvmm.c

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1

drivers/gpu/drm/nouveau/nouveau_uvmm.h

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